Zephyr SDK Version Bump v0.17.2->v0.17.3

[BujSet]

Summary

Bumping Zephyr SDK version to v0.17.3, similar to #13380.

Test plan

Same as #13380, verified correct output on support models (add, softmax, and mv2).

cc @psiddh @AdrianLundell @digantdesai

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/13426

• 📄 Preview Python docs built from this PR

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❌ 2 New Failures, 4 Unrelated Failures

As of commit 776fe33 with merge base bd92f1a ():

NEW FAILURES - The following jobs have failed:

• Build documentation / build (buck2) / Build doc (gh)
  At least one of the pre-conditions you specified did not hold
• trunk / test-arm-cortex-m-size-test (zephyr-preset) / linux-job (gh)
  RuntimeError: Command docker exec -t c10dbc8f00dbf0875178815f95f2c37f50078527c8c68ffaf5bb0585958d1aa0 /exec failed with exit code 2

BROKEN TRUNK - The following jobs failed but were present on the merge base:

👉 Rebase onto the `viable/strict` branch to avoid these failures

• pull / unittest-editable / linux / linux-job (gh) (trunk failure)
  exir/tests/test_remove_unused_parameters_pass.py::TestRemoveUnusedParametersPass::test_remove_unused_parameters_nested_e2e_to_edge
• trunk / test-models-arm-zephyr (add) / linux-job (gh) (trunk failure)
  AttributeError: '_OpNamespace' 'quantized_decomposed' object has no attribute 'convert_element_type'
• trunk / test-models-arm-zephyr (mv2) / linux-job (gh) (trunk failure)
  AttributeError: '_OpNamespace' 'quantized_decomposed' object has no attribute 'convert_element_type'
• trunk / test-models-arm-zephyr (softmax) / linux-job (gh) (trunk failure)
  AttributeError: '_OpNamespace' 'quantized_decomposed' object has no attribute 'convert_element_type'

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[BujSet]

@pytorchbot label "release notes: none"

[digantdesai]

@psiddh do you want to take this over?

[psiddh]

@psiddh do you want to take this over?

@digantdesai Sure. Just rebased the changes, hopefully CI is ok

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